<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>

<div id="app"> 
  <h2>{{message}}</h2>
  <h2>{{message}}，李银河</h2>
  <!-- mustache语法中，不仅仅可以直接写变量，也可以写简单的表达式 -->
  <h2>{{firstName + ' ' + lastName}}</h2>
  <h2>{{firstName}} {{lastName}}</h2>
  <h2>{{counter * 2}}</h2>
</div>
  
<script src="../js/vue.js"></script>
<script>
  const app = new Vue({
    el: '#app',//用于挂载要管理的元素
    data: {
      message: '你好啊',
      firstName: 'kobe',
      lastName: 'bryant',
      counter: 100
    }
  })
</script>

</body>
</html>